From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 61101294D9 for ; Fri, 9 Jun 2023 21:44:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DEE66C433AE; Fri, 9 Jun 2023 21:44:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686347041; bh=radbuxDbJkbz7tX/WJDrIrre7v/NXhvOboGrPvRlRgY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aN8XwXpucSAWoihOF6pNryI0UDTNCJ9r+MSwy8z5Vp7qjiEU5l+0/9dwrPk8D8YaP 2d/Ftx4Ink5l/gfh0h8KhhW/rGa+1uHZw84/ntJUQsesZaDWaslr7H9r7HCtTFHbOO /JFof9pecaCwDKIKImyS9w9X1EC7+XFDWjxcWz6UjPCOAo8NB4z4QcvWoGeIi5LIs5 aovmhDrjYa7EPBG72dlY3jzBcrQZ3i51LK414IyVX3ofUiECawYUR/odJy8D8TY63e zYn/vQEvKjMUClOKP/ejcNrKsX2eraXPORT8gZkP+si+36mOF+aqz9wxFfZA18g8y9 0DQb1bnB6EtKQ== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, sdf@google.com, Jakub Kicinski Subject: [PATCH net-next 12/12] tools: ynl: add sample for ethtool Date: Fri, 9 Jun 2023 14:43:46 -0700 Message-Id: <20230609214346.1605106-13-kuba@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230609214346.1605106-1-kuba@kernel.org> References: <20230609214346.1605106-1-kuba@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Configuring / reading ring sizes and counts is a fairly common operation for ethtool netlink. Present a sample doing that with YNL: $ ./ethtool Channels: enp1s0: combined 1 eni1np1: combined 1 eni2np1: combined 1 Rings: enp1s0: rx 256 tx 256 eni1np1: rx 0 tx 0 eni2np1: rx 0 tx 0 Signed-off-by: Jakub Kicinski --- tools/net/ynl/samples/.gitignore | 1 + tools/net/ynl/samples/ethtool.c | 65 ++++++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+) create mode 100644 tools/net/ynl/samples/ethtool.c diff --git a/tools/net/ynl/samples/.gitignore b/tools/net/ynl/samples/.gitignore index a24678b67557..2aae60c4829f 100644 --- a/tools/net/ynl/samples/.gitignore +++ b/tools/net/ynl/samples/.gitignore @@ -1,2 +1,3 @@ +ethtool devlink netdev diff --git a/tools/net/ynl/samples/ethtool.c b/tools/net/ynl/samples/ethtool.c new file mode 100644 index 000000000000..a7ebbd1b98db --- /dev/null +++ b/tools/net/ynl/samples/ethtool.c @@ -0,0 +1,65 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include + +#include + +#include + +#include "ethtool-user.h" + +int main(int argc, char **argv) +{ + struct ethtool_channels_get_req_dump creq = {}; + struct ethtool_rings_get_req_dump rreq = {}; + struct ethtool_channels_get_list *channels; + struct ethtool_rings_get_list *rings; + struct ynl_sock *ys; + + ys = ynl_sock_create(&ynl_ethtool_family, NULL); + if (!ys) + return 1; + + creq._present.header = 1; /* ethtool needs an empty nest, sigh */ + channels = ethtool_channels_get_dump(ys, &creq); + if (!channels) + goto err_close; + + printf("Channels:\n"); + ynl_dump_foreach(channels, dev) { + printf(" %8s: ", dev->header.dev_name); + if (dev->_present.rx_count) + printf("rx %d ", dev->rx_count); + if (dev->_present.tx_count) + printf("tx %d ", dev->tx_count); + if (dev->_present.combined_count) + printf("combined %d ", dev->combined_count); + printf("\n"); + } + ethtool_channels_get_list_free(channels); + + rreq._present.header = 1; /* ethtool needs an empty nest.. */ + rings = ethtool_rings_get_dump(ys, &rreq); + if (!rings) + goto err_close; + + printf("Rings:\n"); + ynl_dump_foreach(rings, dev) { + printf(" %8s: ", dev->header.dev_name); + if (dev->_present.rx) + printf("rx %d ", dev->rx); + if (dev->_present.tx) + printf("tx %d ", dev->tx); + printf("\n"); + } + ethtool_rings_get_list_free(rings); + + ynl_sock_destroy(ys); + + return 0; + +err_close: + fprintf(stderr, "YNL (%d): %s\n", ys->err.code, ys->err.msg); + ynl_sock_destroy(ys); + return 2; +} -- 2.40.1